EP3024124A1 - Ambient air-vented electrically excited synchronous machine - Google Patents
Ambient air-vented electrically excited synchronous machine Download PDFInfo
- Publication number
- EP3024124A1 EP3024124A1 EP14194534.5A EP14194534A EP3024124A1 EP 3024124 A1 EP3024124 A1 EP 3024124A1 EP 14194534 A EP14194534 A EP 14194534A EP 3024124 A1 EP3024124 A1 EP 3024124A1
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- EP
- European Patent Office
- Prior art keywords
- synchronous machine
- rotor
- electrically excited
- excited synchronous
- coil winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Definitions
- the invention relates to a fürzugbel dividedete electrically excited synchronous machine.
- Duct-ventilated dynamo-electric machines in particular electrically excited synchronous machines have, for structural reasons and for thermal reasons, an airflow within the dynamoelectric machine, which is partially directed counter to the direction of movement of the rotating parts of this machine.
- an abrasion u.a. on the insulation of the coils on the pole bodies of the rotor This is especially the case when such a dynamoelectric machine is used in a dusty environment.
- an elastic mass e.g. Silicone is placed directly on the abrasion-affected winding parts of the rotor.
- the present invention seeks to provide a Wegbel structuredete electrically excited synchronous machine, which provides sufficient protection against abrasion with sufficient cooling and relatively good accessibility of the individual machine parts, in particular the rotor for maintenance.
- a Quinzabel electrically excited synchronous machine with a Rotor which is rotatably positioned on a shaft, wherein the rotor has a rotor winding with individual pole coils, which are each arranged around a pole body, wherein at the end faces of the pole body in each case a coil winding head is formed, wherein a coil protection element is provided in each case to this coil winding head, which protects the coil winding head from abrasion.
- a through-ventilated, electrically excited synchronous machine is understood to mean a synchronous machine which can be electrically excited via coils of a rotor.
- the coils are fed electrically via slip rings or via the known brushless excitation devices.
- At least one self-ventilator and / or at least one external fan generates by means of ambient air one or more cooling air streams through the machine.
- the protective elements are mounted so that the coil winding heads of the winding of the rotor are protected from abrasion. This is ensured, in particular, when the protective elements, viewed in the direction of rotation of the rotor, are respectively mounted in front of the coil winding heads.
- the protective elements are made of metal (steel or aluminum) or plastic.
- Protective elements made of plastic individually or as a one-piece protection device are easy and simple to produce, so that the inertia of the rotor by the protective elements or the protective device changes only insignificantly.
- the protective elements or protective devices made of plastic are comparatively easy to produce, for example by injection molding.
- the metallic protective elements are produced individually or as a protective device. In this case, for example, casting methods with, where appropriate, subsequent at least partial machining post-processing of predetermined surfaces, such as e.g. the shaft seat of the protection device.
- the protective elements are individually and can be fixed by correspondingly formed fastening devices, such as snap-in connections, clamping devices, screw etc., on the pole body of the rotor.
- the protective elements are designed shell-shaped.
- the geometric configuration of the protective elements is such that viewed in the direction of rotation about the first half of the coil winding head is covered. This is particularly advantageous in the case of a through-flow-ventilated, electrically excited synchronous machine with only one direction of rotation, since, in spite of this, one does so designed protective elements adjusts a cooling effect on the coils of the rotor
- fastening means are provided on each protective element in order to attach further elements to the protective elements. These are, for example, fan blades and / or balancing weights that allow subsequent balancing of the rotor.
- the protective elements are provided at their radially outer edge with a curvature which deflects a substantially radial air flow along the protective elements substantially axially and thus leads away from the end face of the rotor. This configuration of the protective element avoids that a radial air flow with the particles is guided on the winding head of the stator and there leads to Abrasionsproblemen.
- such a machine is designed with cup-shaped protective elements only for one direction of rotation. This is particularly advantageous in generators powered by diesel engines, such as those described in US Pat. on locomotives, multiple units, minivans or ships.
- a gap between the protective element and the winding overhang is provided, which complies with the isolation technology distances and also meets the cooling requirements.
- a cooling air flow with decelerated particles is preferably guided into the gap between the protective element and the surface of the coil.
- the protective elements are sufficiently spaced when the air gaps so the isolation distances are met and a further air flow can take place in this gap free of particles of high kinetic energy.
- the axial air mass flow is not limited by the pole gaps. This ensures further maximum cooling capacity of the coil sides and thus the coils of the rotor.
- FIG. 1 shows in a longitudinal section through a ventilated electrical excited synchronous machine 1 with a stator 2 and a rotor 3. At the end faces of the stator 2, a Statorwickelkopf 4 is present.
- the rotor 3 has radially outwardly projecting pole body 13, which are each provided with a pole coil 15 and form the rotor winding 5 in their entirety.
- the pole coils 15 are supplied via a non-illustrated slip ring assembly or a brushless exciter device with electrical power.
- the rotor 3 is rotatably mounted on a shaft 7 which rotates about an axis 12.
- the dynamoelectric machine is operated as a motor or as a generator.
- cooling air streams 19 are distributed within the machine and flow, inter alia, via cooling channels in stator 2, rotor 3, the pole gaps 28 of the rotor 3 and the air gap 14.
- protective elements 11 are provided as abrasion protection 6 according to the invention.
- FIG. 2 This is also the example FIG. 2 to see where the protective elements 11 are arranged on a ring 10 and thus form a protective device 21. At radially extending arms 20 of this ring 10, the protective elements 11 are arranged.
- the protective elements 11 are designed shell-shaped when viewed in cross-section and thus form an angle ⁇ of approximately 90 ° viewed from the air gap 14.
- the angle ⁇ of a protective element 11 may be formed depending on the application between 60 and 150 °. In the direction of movement 17 of the rotor or rotor 3 thus almost no air particles can bounce on the insulation of the coil winding head 16 and damage the insulation. The insulation is therefore protected, which extends the service life and the maintenance intervals of the draft-ventilated electrically excited synchronous machine 1.
- the protective elements 11 also separately on the pole body 13 can be attached, which also includes the above-mentioned advantages respect.
- FIG. 2 also shows an eight-pole rotor 3 with its pole bodies 13, around each of which a pole coil 15 is placed.
- the protective elements 11 are now arranged on a central ring 10.
- the protective elements 11 are provided with means 18 which allow attachment of fan blades and / or balancing weights.
- These means 18 are used in manufacture - e.g. a casting process - the protective element 11 or the protective device 21 is formed.
- a post-processing of these means 18, or other surfaces of the protective elements 11 or the protective device 21, such as milling or drilling is necessary.
- FIG. 3 also shows a recess 22 of the ring 10, via which an electrical connection between the slip ring body or a brushless exciter device and the pole coils 15 of the rotor 3 takes place.
- a curvature 23 is provided at the radially outer end of the protective elements 11, which deflects a substantially radial air flow substantially axially and thus leads away from the end face of the rotor 3.
- This configuration of the protective element 11 prevents a radial air flow with the particles contained therein from hitting the stator winding head 4 and causing abrasion problems at the insulation there.
- the portion of the protective element 11 shielding the coil winding head 16 of the rotor 3 is formed with its arm 20 substantially as follows.
- Section 25 extends substantially parallel to the end face of the rotor 3 and has the means 18.
- Section 26 is characterized by a bend, to which, in particular in the radially outer region of the protective element 11, a section 27 connects, which extends substantially in the direction of the pole gap 28.
- the angle ⁇ is thereby created essentially by the bending of the section 26.
- Such abrasion protection 6 of a through-ventilated electrically excited synchronous machine with cup-shaped protective elements 11 is preferably suitable for one direction of rotation. This is particularly advantageous in generators driven by diesel engines, such as those described in US Pat. on locomotives, multiple units, mining trucks or ships.
- passage-ventilated electrically excited synchronous machines 1 for both directions of rotation e.g. two shells per coil winding head 16, each with approximately 90 ° provided, or it is a shell used as a protective element 11 with approximately 180 °, which thus has more a trough-shaped structure.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
- Motor Or Generator Cooling System (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Die Erfindung betrifft eine durchzugsbelüftete elektrisch erregte Synchronmaschine (1) mit einem Rotor (3), der auf einer Welle (7) drehfest positioniert ist, wobei der Rotor (3) eine Rotorwicklung (5) mit einzelnen Polspulen (15) aufweist, die jeweils um einen Polkörper (13) angeordnet sind, wobei an den Stirnseiten jedes Polkörpers (13) jeweils ein Spulenwickelkopf (16) ausgebildet ist, wobei an jedem Spulenwickelkopf (16) ein Schutzelement (11,6) vorgesehen ist, das die Isolierung des Spulenwickelkopfes (16) vor Abrasion durch Partikel im Kühlluftstrom schützt.The invention relates to a passage - ventilated electrically excited synchronous machine (1) having a rotor (3) which is rotatably mounted on a shaft (7), wherein the rotor (3) has a rotor winding (5) with individual pole coils (15) each are arranged around a pole body (13), wherein a coil winding head (16) is formed on each of the end faces of each pole body (13), wherein a protective element (11, 6) is provided on each coil winding head (16) which controls the insulation of the coil winding head (16). 16) protects against abrasion by particles in the cooling air flow.
Description
Die Erfindung betrifft eine durchzugsbelüftete elektrisch erregte Synchronmaschine.The invention relates to a Durchzugbelüftete electrically excited synchronous machine.
Durchzugsbelüftete dynamoelektrische Maschinen, insbesondere elektrisch erregte Synchronmaschinen weisen konstruktionsbedingt und aus thermischen Gründen eine Luftströmung innerhalb der dynamoelektrischen Maschine auf, die teilweise entgegen der Bewegungsrichtung der rotierenden Teile dieser Maschine gerichtet ist. Damit stellt sich insbesondere bei vergleichsweise hohen Relativgeschwindigkeiten der unterschiedlichen Maschinenteile eine Abrasion u.a. an der Isolation der Spulen auf den Polkörpern des Rotors ein. Dies ist insbesondere dann der Fall, wenn eine derartige dynamoelektrische Maschine in einer staubhaltigen Umgebung eingesetzt ist.Duct-ventilated dynamo-electric machines, in particular electrically excited synchronous machines have, for structural reasons and for thermal reasons, an airflow within the dynamoelectric machine, which is partially directed counter to the direction of movement of the rotating parts of this machine. Thus, in particular at relatively high relative speeds of the different machine parts, an abrasion u.a. on the insulation of the coils on the pole bodies of the rotor. This is especially the case when such a dynamoelectric machine is used in a dusty environment.
Bisher wird ein Schutz der Polspulen dadurch erreicht, dass eine elastische Masse, z.B. Silikon direkt auf die von Abrasion betroffenen Wicklungsteile des Rotors gebracht wird.So far, a protection of the pole coils is achieved in that an elastic mass, e.g. Silicone is placed directly on the abrasion-affected winding parts of the rotor.
Nachteilig dabei ist, dass dies zu einer schlechteren Entwärmung, insbesondere des Spulenwickelkopfes des Rotors führt. Ebenso sind Wartungsarbeiten, z.B. ein Nachimprägnieren der Wicklung des Rotors, nur mit vergleichsweise hohem Aufwand durchzuführen.The disadvantage here is that this leads to a poorer heat dissipation, in particular of the coil winding head of the rotor. Likewise, maintenance work, e.g. a Nachimprägnieren the winding of the rotor to perform only with relatively high effort.
Ausgehend davon liegt der Erfindung die Aufgabe zugrunde, eine durchzugsbelüftete elektrisch erregte Synchronmaschine zu schaffen, die bei ausreichender Entwärmung und vergleichsweise guter Zugänglichkeit der einzelnen Maschinenteile, insbesondere des Rotors für Wartungsarbeiten einen ausreichenden Schutz gegen Abrasion bietet.Based on this, the present invention seeks to provide a durchzugbelüftete electrically excited synchronous machine, which provides sufficient protection against abrasion with sufficient cooling and relatively good accessibility of the individual machine parts, in particular the rotor for maintenance.
Die Lösung der gestellten Aufgabe gelingt durch eine durchzugsbelüftete elektrisch erregte Synchronmaschine mit einem Rotor, der auf einer Welle drehfest positioniert ist, wobei der Rotor eine Rotorwicklung mit einzelnen Polspulen aufweist, die jeweils um einen Polkörper angeordnet sind, wobei an den Stirnseiten des Polkörpers jeweils ein Spulenwickelkopf ausgebildet ist, wobei an diesen Spulenwickelkopf jeweils ein Schutzelement vorgesehen ist, das den Spulenwickelkopf vor Abrasion schützt.The solution of the problem is achieved by a Durchzugbelüftete electrically excited synchronous machine with a Rotor which is rotatably positioned on a shaft, wherein the rotor has a rotor winding with individual pole coils, which are each arranged around a pole body, wherein at the end faces of the pole body in each case a coil winding head is formed, wherein a coil protection element is provided in each case to this coil winding head, which protects the coil winding head from abrasion.
Dabei wird unter einer durchzugsbelüftete elektrisch erregten Synchronmaschine eine Synchronmaschine verstanden, die über Spulen eines Rotors elektrisch erregt werden kann. Die Spulen werden dabei über Schleifringe oder über die an sich bekannten bürstenlosen Erregereinrichtungen elektrisch gespeist. Zumindest ein Eigen- und/oder zumindest ein Fremdlüfter erzeugt mittels Umgebungsluft einen oder mehrere Kühlluftströme durch die Maschine.In this case, a through-ventilated, electrically excited synchronous machine is understood to mean a synchronous machine which can be electrically excited via coils of a rotor. The coils are fed electrically via slip rings or via the known brushless excitation devices. At least one self-ventilator and / or at least one external fan generates by means of ambient air one or more cooling air streams through the machine.
Die Schutzelemente sind derart angebracht, dass die Spulenwickelköpfe der Wicklung des Rotors vor Abrasion geschützt sind. Dies ist insbesondere dann gewährleistet, wenn die Schutzelemente in Drehrichtung des Rotors betrachtet jeweils vor den Spulenwickelköpfen angebracht sind.The protective elements are mounted so that the coil winding heads of the winding of the rotor are protected from abrasion. This is ensured, in particular, when the protective elements, viewed in the direction of rotation of the rotor, are respectively mounted in front of the coil winding heads.
Je nach Umgebungsbedingungen, Drehzahl der Maschine sind die Schutzelemente aus Metall (Stahl oder Aluminium) oder aus Kunststoff.Depending on the ambient conditions, speed of the machine, the protective elements are made of metal (steel or aluminum) or plastic.
Schutzelemente aus Kunststoff einzeln oder als einstückige Schutzvorrichtung (ein Schutzelement pro Polkörper, die an einem gemeinsamen Ring angeordnet sind) sind leicht und einfach herstellbar, so dass sich die Trägheit des Läufers durch die Schutzelemente oder die Schutzvorrichtung nur unwesentlich verändert.Protective elements made of plastic individually or as a one-piece protection device (a protective element per polar body, which are arranged on a common ring) are easy and simple to produce, so that the inertia of the rotor by the protective elements or the protective device changes only insignificantly.
Die Schutzelemente oder Schutzvorrichtungen aus Kunststoff sind vergleichsweise einfach z.B. im Spritzgießverfahren herzustellen.The protective elements or protective devices made of plastic are comparatively easy to produce, for example by injection molding.
Auch die metallisch ausgeführten Schutzelemente sind einzeln oder als Schutzvorrichtung herstellbar. Dabei eignen sich beispielsweise Gießverfahren mit ggf. anschließender zumindest partieller spanender Nachbearbeitung vorgegebener Flächen, wie z.B. des Wellensitzes der Schutzvorrichtung.The metallic protective elements are produced individually or as a protective device. In this case, for example, casting methods with, where appropriate, subsequent at least partial machining post-processing of predetermined surfaces, such as e.g. the shaft seat of the protection device.
Besonders einfach wird die Positionierung der Schutzelemente am Rotor, wenn sich sämtliche Schutzelemente einer dementsprechend ausgeführten Rotorwicklung auf einem Ring befinden, der lediglich noch auf einer Welle positioniert und drehfest angeordnet werden muss, um so die Spulenwickelköpfe zu schützen. Besonders einfach wird dabei die Konstruktion, wenn sowohl Ring als auch die einzelnen Schutzelemente der jeweiligen Polkörper des Rotors als einstückiges Material vorhanden sind. Es ist demnach pro Läuferdurchmesser und Polanzahl des Läufers eine eigene Schutzvorrichtung vorzusehen.Particularly easy is the positioning of the protective elements on the rotor when all the protective elements of a correspondingly executed rotor winding are located on a ring which only needs to be positioned on a shaft and rotationally fixed, so as to protect the coil winding heads. The construction becomes particularly simple if both the ring and the individual protective elements of the respective pole bodies of the rotor are present as a one-piece material. It is therefore to provide per runner diameter and number of poles of the rotor own protective device.
Demgegenüber sind einzelne Schutzelemente universeller einsetzbar, da jeder einzelne Polkörper mit seinem Schutzelement versehen wird.In contrast, individual protection elements are universally applicable, since each individual polar body is provided with its protective element.
In dieser weiteren Ausführung liegen die Schutzelemente einzeln vor und können durch dementsprechend ausgebildete Befestigungsvorrichtungen, wie Schnappverbindungen, Klemmvorrichtungen, Schraubverbindungen etc. am Polkörper des Rotors fixiert werden. Dies hat den Vorteil, dass unabhängig von der Anzahl der Pole des Rotors keine eigens ausgeführte Konstruktion mit einem Ring vorgesehen werden muss, sondern lediglich dementsprechende Schutzelemente dem jeweiligen Polkörper zugewiesen sind.In this further embodiment, the protective elements are individually and can be fixed by correspondingly formed fastening devices, such as snap-in connections, clamping devices, screw etc., on the pole body of the rotor. This has the advantage that, regardless of the number of poles of the rotor no specially designed construction with a ring must be provided, but only corresponding protective elements are assigned to the respective polar body.
Um den Schutz vor Abrasion besonders vorteilhaft zu gestalten, sind die Schutzelemente schalenförmig ausgeführt. Dabei ist die geometrische Ausgestaltung der Schutzelemente derart, dass in Drehrichtung betrachtet ca. die erste Hälfte des Spulenwickelkopfes abdeckt ist. Dies ist besonders bei durchzugsbelüftete elektrisch erregten Synchronmaschine mit nur einer Drehrichtung vorteilhaft, da sich trotz dieser derart gestalteten Schutzelemente eine Kühlwirkung an den Spulen des Rotors einstelltIn order to make the protection against abrasion particularly advantageous, the protective elements are designed shell-shaped. The geometric configuration of the protective elements is such that viewed in the direction of rotation about the first half of the coil winding head is covered. This is particularly advantageous in the case of a through-flow-ventilated, electrically excited synchronous machine with only one direction of rotation, since, in spite of this, one does so designed protective elements adjusts a cooling effect on the coils of the rotor
Vorteilhafterweise sind an jedem Schutzelement Befestigungsmittel vorgesehen, um an den Schutzelementen weitere Elemente anzubringen. Dies sind beispielsweise Lüfterflügel und/oder Wuchtgewichte, die ein nachträgliches Wuchten des Rotors gestatten.Advantageously, fastening means are provided on each protective element in order to attach further elements to the protective elements. These are, for example, fan blades and / or balancing weights that allow subsequent balancing of the rotor.
In einer weiteren Ausführungsform sind die Schutzelemente an ihrem radial äußeren Rand mit einer Krümmung versehen, die einen im Wesentlichen radialen Luftstrom entlang der Schutzelemente im Wesentlichen axial umlenkt und so von der Stirnseite des Rotors wegführt. Durch diese Ausgestaltung des Schutzelements wird vermieden, dass ein radialer Luftstrom mit den Partikeln auf den Wickelkopf des Stators geführt wird und dort zu Abrasionsproblemen führt.In a further embodiment, the protective elements are provided at their radially outer edge with a curvature which deflects a substantially radial air flow along the protective elements substantially axially and thus leads away from the end face of the rotor. This configuration of the protective element avoids that a radial air flow with the particles is guided on the winding head of the stator and there leads to Abrasionsproblemen.
Vorteilhafterweise ist eine derartige Maschine mit schalenförmigen Schutzelementen nur für eine Drehrichtung ausgelegt. Die ist besonders vorteilhaft bei Generatoren die von Dieselmotoren angetrieben werden, wie z.B. auf Lokomotiven, Triebzügen, Miningtrucks oder Schiffen.Advantageously, such a machine is designed with cup-shaped protective elements only for one direction of rotation. This is particularly advantageous in generators powered by diesel engines, such as those described in US Pat. on locomotives, multiple units, minivans or ships.
Je nach Material der Schutzelemente ist ein Spalt zwischen Schutzelement und Wickelkopf vorgesehen, der die isolationstechnischen Abstände einhält und außerdem die kühltechnischen Anforderungen erfüllt. Es wird dabei vorzugsweise ein Kühlluftstrom mit entschleunigten Partikeln in den Spalt zwischen Schutzelement und Oberfläche der Spule geführt.Depending on the material of the protective elements, a gap between the protective element and the winding overhang is provided, which complies with the isolation technology distances and also meets the cooling requirements. In this case, a cooling air flow with decelerated particles is preferably guided into the gap between the protective element and the surface of the coil.
Die Schutzelemente sind ausreichend beabstandet, wenn die Luftstrecken also die Isolationsabstände eingehalten sind und eine weitere Luftführung in diesen Spalt frei von Partikeln hoher kinetischer Energie stattfinden kann.The protective elements are sufficiently spaced when the air gaps so the isolation distances are met and a further air flow can take place in this gap free of particles of high kinetic energy.
Durch die erfindungsgemäße Ausgestaltung des Abrasionsschutzes der Wicklung des Rotors, insbesondere der Spulenwickelköpfe durch die Schutzelemente bzw. Schutzvorrichtung ist der axiale Luftmassenstrom durch die Pollücken nicht eingeschränkt. Dies gewährleistet weiterhin eine maximale Kühlleistung der Spulenseiten und damit der Spulen des Rotors.Due to the inventive design of the abrasion protection of the winding of the rotor, in particular the coil winding heads by the protective elements or protective device, the axial air mass flow is not limited by the pole gaps. This ensures further maximum cooling capacity of the coil sides and thus the coils of the rotor.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung sind den im Folgenden dargestellten Ausführungsbeispielen zu entnehmen. Dabei zeigen:
- FIG 1
- einen Längsschnitt einer permanent erregten Synchronmotors mit Durchzugsbelüftung,
- FIG 2
- eine Seitenansicht eines Läufers,
- FIG 3
- perspektivische Darstellung des Abrasionsschutzes.
- FIG. 1
- a longitudinal section of a permanent magnet synchronous motor with draft ventilation,
- FIG. 2
- a side view of a runner,
- FIG. 3
- perspective view of the abrasion protection.
An den Stirnseiten des Rotors 3 sind dabei Spulenwickelköpfe 16 dieser Polspulen 15 sichtbar. Der Rotor 3 ist auf einer Welle 7 drehfest positioniert, die sich um eine Achse 12 dreht. Durch elektromagnetische Wechselwirkung der Wicklungssysteme von Stator 2 und Rotor 3 über den Luftspalt 14 hinweg, wird die dynamoelektrische Maschine als Motor oder als Generator betrieben.At the end faces of the
Zur Kühlung dieser elektrischen Synchronmaschine 1 wird die Umgebungsluft verwendet, so dass beispielsweise über einen Stutzen 8 Kühlluft in den Innenraum der Synchronmaschine 1 geführt wird. Diese Kühlluftströme 19 werden innerhalb der Maschine verteilt und strömen unter anderem über Kühlkanäle in Stator 2, Rotor 3, den Pollücken 28 des Rotors 3 und den Luftspalt 14.For cooling this electric synchronous machine 1, the ambient air is used, so that, for example via a
Aufgrund der Luftströmungsgeschwindigkeit, den damit von außen nach innen getragenen Partikeln und der gleichzeitigen vergleichsweise dazu hohen Relativgeschwindigkeit des Rotors 3 und damit der Rotorwicklung 5 tritt an ungünstigen Abschnitten des Spulenwickelkopfes 16 Abrasion der Isolierung des Spulenwickelkopfes 16 der Polspulen 15 und damit der Rotorwicklung 5 ein. Um dies zu vermeiden, sind erfindungsgemäß Schutzelemente 11 als Abrasionsschutz 6 vorgesehen.Due to the air flow velocity, the particles carried thereby from outside to inside and the comparatively high relative speed of the
Dies ist beispielsweise auch der
Selbstverständlich sind die Schutzelemente 11 auch separat einzeln am Polkörper 13 anbringbar, was ebenfalls die oben erwähnten Vorteile bzgl. des Schutzes der Isolierung der Wicklung des Rotors 3 und des Spulenwickelkopfes 16 beinhaltet.Of course, the
Diese Mittel 18 werden bei Herstellung - also z.B. eines Gießvorganges - des Schutzelements 11 oder der Schutzvorrichtung 21 mit ausgebildet. Gegebenenfalls ist eine Nachbearbeitung dieser Mittel 18, oder anderer Flächen der Schutzelemente 11 oder der Schutzvorrichtung 21, wie Fräsen oder Bohren notwendig.These means 18 are used in manufacture - e.g. a casting process - the
Gemäß
Vorteilhafterweise ist der Abschnitt des Schutzelements 11, der den Spulenwickelkopf 16 des Rotors 3 abschirmt mit seinem Arm 20 im Wesentlichen wie folgt ausgebildet. Das Schutzelement 11 unabhängig davon, ob es einen Teil einer Schutzvorrichtung 21 mit Ring 10 ausbildet oder einzeln am Polkörper 13 positioniert wird, weist drei Abschnitte 25, 26, 27 auf. Abschnitt 25 verläuft im Wesentlichen parallel zur Stirnseite des Rotors 3 und weist die Mittel 18 auf. Abschnitt 26 ist durch eine Biegung gekennzeichnet, an den sich vor allem im radial äußeren Bereich des Schutzelements 11 ein Abschnitt 27 anschließt, der sich im Wesentlichen in Richtung Pollücke 28 erstreckt.Advantageously, the portion of the
Der Winkel α wird dabei im Wesentlichen durch die Biegung des Abschnitt 26 geschaffen.The angle α is thereby created essentially by the bending of the
Ein derartiger Abrasionsschutz 6 einer durchzugsbelüfteten elektrisch erregten Synchronmaschine mit schalenförmigen Schutzelementen 11 eignet sich vorzugsweise für eine Drehrichtung. Die ist besonders vorteilhaft bei Generatoren, die von Dieselmotoren angetrieben werden, wie z.B. auf Lokomotiven, Triebzügen, Mining-Trucks oder Schiffen.
Bei durchzugsbelüfteten elektrisch erregten Synchronmaschinen 1 für beide Drehrichtungen sind z.B. zwei Schalen je Spulenwickelkopf 16 mit je ca. 90° vorzusehen, oder es wird eine Schale als Schutzelement 11 mit ca. 180° verwendet, die somit mehr eine wannenförmige Struktur aufweist.In the case of passage-ventilated electrically excited synchronous machines 1 for both directions of rotation, e.g. two shells per
Claims (8)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14194534.5A EP3024124A1 (en) | 2014-11-24 | 2014-11-24 | Ambient air-vented electrically excited synchronous machine |
MX2017006705A MX364670B (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine. |
EP15795193.0A EP3207622A1 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
US15/529,024 US20170264175A1 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
PCT/EP2015/076915 WO2016083199A1 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
AU2015352820A AU2015352820B2 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
CN201580061519.3A CN107112827A (en) | 2014-11-24 | 2015-11-18 | The electric excitation synchronous motor of insertion ventilation |
CA2982953A CA2982953A1 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
CA2968433A CA2968433A1 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
CL2017001304A CL2017001304A1 (en) | 2014-11-24 | 2017-05-22 | Synchronous machine electrically excited, ventilated with air flow |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14194534.5A EP3024124A1 (en) | 2014-11-24 | 2014-11-24 | Ambient air-vented electrically excited synchronous machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3024124A1 true EP3024124A1 (en) | 2016-05-25 |
Family
ID=51932283
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14194534.5A Withdrawn EP3024124A1 (en) | 2014-11-24 | 2014-11-24 | Ambient air-vented electrically excited synchronous machine |
EP15795193.0A Withdrawn EP3207622A1 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15795193.0A Withdrawn EP3207622A1 (en) | 2014-11-24 | 2015-11-18 | Enclosed-ventilated, electrically excited synchronous machine |
Country Status (8)
Country | Link |
---|---|
US (1) | US20170264175A1 (en) |
EP (2) | EP3024124A1 (en) |
CN (1) | CN107112827A (en) |
AU (1) | AU2015352820B2 (en) |
CA (2) | CA2982953A1 (en) |
CL (1) | CL2017001304A1 (en) |
MX (1) | MX364670B (en) |
WO (1) | WO2016083199A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102019217464A1 (en) | 2019-11-12 | 2021-05-12 | Robert Bosch Gmbh | Component of an electrical machine |
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KR101855763B1 (en) * | 2016-06-03 | 2018-05-09 | 현대자동차 주식회사 | Wrsm motor |
-
2014
- 2014-11-24 EP EP14194534.5A patent/EP3024124A1/en not_active Withdrawn
-
2015
- 2015-11-18 WO PCT/EP2015/076915 patent/WO2016083199A1/en active Application Filing
- 2015-11-18 MX MX2017006705A patent/MX364670B/en active IP Right Grant
- 2015-11-18 AU AU2015352820A patent/AU2015352820B2/en not_active Ceased
- 2015-11-18 CN CN201580061519.3A patent/CN107112827A/en active Pending
- 2015-11-18 US US15/529,024 patent/US20170264175A1/en not_active Abandoned
- 2015-11-18 EP EP15795193.0A patent/EP3207622A1/en not_active Withdrawn
- 2015-11-18 CA CA2982953A patent/CA2982953A1/en not_active Abandoned
- 2015-11-18 CA CA2968433A patent/CA2968433A1/en not_active Withdrawn
-
2017
- 2017-05-22 CL CL2017001304A patent/CL2017001304A1/en unknown
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US2683233A (en) * | 1951-02-06 | 1954-07-06 | Gen Motors Corp | Rotor for dynamoelectric machines |
DE3442348A1 (en) * | 1984-11-20 | 1986-05-22 | Ebm Elektrobau Mulfingen Gmbh & Co, 7119 Mulfingen | External-rotor motor |
DE8625788U1 (en) * | 1986-09-26 | 1988-06-09 | Metabowerke GmbH & Co, 72622 Nürtingen | Armature for open-circuit ventilated electric motors |
DE29821112U1 (en) * | 1998-11-25 | 1999-01-21 | Metabowerke GmbH & Co, 72622 Nürtingen | Anchor with protective cage for ventilated electric motors |
Also Published As
Publication number | Publication date |
---|---|
MX2017006705A (en) | 2017-10-18 |
MX364670B (en) | 2019-05-03 |
CL2017001304A1 (en) | 2017-12-15 |
CA2968433A1 (en) | 2016-06-02 |
CN107112827A (en) | 2017-08-29 |
US20170264175A1 (en) | 2017-09-14 |
CA2982953A1 (en) | 2016-06-02 |
EP3207622A1 (en) | 2017-08-23 |
AU2015352820A1 (en) | 2017-06-08 |
WO2016083199A1 (en) | 2016-06-02 |
AU2015352820B2 (en) | 2018-07-05 |
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